Patents by Inventor Doo Hee Jang
Doo Hee Jang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11952968Abstract: The present invention relates a safety ignition device for a high altitude dual pulse motor according to the present invention, and can prevent accidental ignition of an ignition device or a propulsion engine while efficiently using a space by installing the safety ignition device in front of a combustion pipe, increase the reliability of ignition, and maintain the air tightness of the inside of the propulsion engine and the ignition device even in a high altitude environment.Type: GrantFiled: July 18, 2023Date of Patent: April 9, 2024Assignee: AGENCY FOR DEFENSE DEVELOPMENTInventors: Seung Gyo Jang, Doo Hee Han, Young Hwa Kwon
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Patent number: 9618817Abstract: An LCD device includes a first substrate including a display region having pixel regions and a non-display region disposed outside the display region; gate lines and data lines on the first substrate and cross each other to define the pixel regions; a TFT in each of the pixel regions; a pixel electrode in each pixel region and connected to the TFT; a second substrate disposed opposite the first substrate; a color filter layer on the second substrate; a common electrode; a liquid crystal layer between the first and second substrates; and an FPC connected to the non-display region on one side of the first substrate, the FPC being bent toward an outer side surface of the second substrate, wherein each of the gate lines has a double structure including a first layer of a transparent conductive material and a second layer of Cu or Cu alloy.Type: GrantFiled: November 29, 2012Date of Patent: April 11, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Doo-Hee Jang, Jeong-Yun Lee, Hang-Sup Cho
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Patent number: 9333700Abstract: Disclosed is an imprinting apparatus and imprinting method using the same that prevent a process of forming a pattern on a substrate from being affected by flatness of a stage. The imprinting apparatus comprises a chamber unit in which a process of forming a pattern on a substrate is carried out; a stage for supporting the substrate on which a resin layer is formed; an installing member positioned above the stage and having a mold member attached to transform the resin layer so as to form the pattern on the substrate; and a first spraying unit for spraying fluid to separate the substrate supported by the stage from the stage, wherein the installing member moves the mold member in the direction getting near to the substrate separated from the stage so that the mold member and the resin layer are brought into contact with each other.Type: GrantFiled: March 18, 2014Date of Patent: May 10, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Doo Hee Jang, Tae Joon Song, Dhang Kwon, Hang Sup Cho, Seong Pil Cho, Ho Su Kim, Jin Hee Jang
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Patent number: 9082671Abstract: An array substrate for a liquid crystal display device comprises: gate and data lines crossing each other on a substrate to define a pixel region; a common line spaced apart from and parallel with the gate line; a thin film transistor in the pixel region and connected to the gate and data lines; a passivation layer on the thin film transistor; and pixel and common electrodes alternately arranged to produce an in-plane electric field, wherein each of the pixel and common electrodes has a double-layered structure of which the lower layer is formed of reflective conductive material and the upper layer is formed of transparent conductive material.Type: GrantFiled: August 16, 2012Date of Patent: July 14, 2015Assignee: LG DISPLAY CO., LTD.Inventors: Doo-Hee Jang, Young-Sup Jung, Jeong-Yun Lee, Ju-Ran Lee, Soo-Young Choi
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Patent number: 9075270Abstract: A liquid crystal display device is discussed, which includes a substrate; gate and data lines crossing each other on the substrate to thereby define a pixel region; a thin film transistor connected to the gate and data lines; and a plurality of pixel electrodes and a plurality of first common electrodes alternating with each other in the pixel region and configured to induce an in-plane electric field, and each including a first layer and a second layer on the first layer, wherein the first layer is made of an opaque metal and has a first thickness, and the second layer is made of a transparent conductive material and has a second thickness.Type: GrantFiled: July 11, 2012Date of Patent: July 7, 2015Assignee: LG DISPLAY CO., LTD.Inventors: Jeong-Yun Lee, Young-Sup Jung, Hang-Sup Cho, Doo-Hee Jang
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Patent number: 8858859Abstract: Disclosed are an apparatus and method for fabricating a flat panel display device to realize easy separation of a substrate from an imprinting mold. The apparatus includes an imprinting mold connected to a substrate to form a thin film pattern on the substrate, a first adsorption pad to vacuum-adsorb the center of the imprinting mold, a second adsorption pad to vacuum-adsorb the periphery of the imprinting mold, and a connector connected to vacuum pins to vertically move in different regions of the first and second adsorption pads.Type: GrantFiled: April 15, 2011Date of Patent: October 14, 2014Assignee: LG Display Co., Ltd.Inventors: Tae-Joon Song, Dhang Kwon, Hang-Sup Cho, Seong-Pil Cho, Ho Su Kim, Doo-Hee Jang
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Publication number: 20140199426Abstract: Disclosed is an imprinting apparatus and imprinting method using the same that prevent a process of forming a pattern on a substrate from being affected by flatness of a stage. The imprinting apparatus comprises a chamber unit in which a process of forming a pattern on a substrate is carried out; a stage for supporting the substrate on which a resin layer is formed; an installing member positioned above the stage and having a mold member attached to transform the resin layer so as to form the pattern on the substrate; and a first spraying unit for spraying fluid to separate the substrate supported by the stage from the stage, wherein the installing member moves the mold member in the direction getting near to the substrate separated from the stage so that the mold member and the resin layer are brought into contact with each other.Type: ApplicationFiled: March 18, 2014Publication date: July 17, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Doo Hee JANG, Tae Joon SONG, Dhang KWON, Hang Sup CHO, Seong Pil CHO, Ho Su KIM, Jin Hee JANG
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Patent number: 8728331Abstract: A method of fabricating an imprint mold is disclosed. The method includes: forming a first photo resist pattern on a substrate; etching the substrate using the first photo resist pattern as an etch mask to form a first pattern in the substrate; ashing the first photo resist pattern to form a second photo resist pattern; and etching the substrate using the second photo resist pattern to form a second pattern derived from the substrate and a third pattern derived from the first pattern.Type: GrantFiled: December 7, 2010Date of Patent: May 20, 2014Assignee: LG Display Co., Ltd.Inventors: Doo Hee Jang, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 8728377Abstract: Disclosed is an imprinting apparatus and imprinting method using the same that prevent a process of forming a pattern on a substrate from being affected by flatness of a stage. The imprinting apparatus comprises a chamber unit in which a process of forming a pattern on a substrate is carried out; a stage for supporting the substrate on which a resin layer is formed; an installing member positioned above the stage and having a mold member attached to transform the resin layer so as to form the pattern on the substrate; and a first spraying unit for spraying fluid to separate the substrate supported by the stage from the stage, wherein the installing member moves the mold member in the direction getting near to the substrate separated from the stage so that the mold member and the resin layer are brought into contact with each other.Type: GrantFiled: May 13, 2011Date of Patent: May 20, 2014Assignee: LG Display Co., Ltd.Inventors: Doo Hee Jang, Tae Joon Song, Dhang Kwon, Hang Sup Cho, Seong Pil Cho, Ho Su Kim, Jin Hee Jang
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Patent number: 8647902Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming gate and data lines crossing each other on a substrate; forming a thin film transistor connected to the gate and data lines; forming a passivation layer on the substrate having the gate lines, data lines and the thin film transistor; forming a first conductive material layer on the passivation layer and connected to a drain electrode of the thin film transistor; oxidizing a surface of the first conductive material layer; forming a second conductive material layer on the oxidized first conductive material layer; forming a photoresist pattern on the second conductive material layer; etching the first and second conductive material layers using the photoresist pattern to form pixel and common electrodes which are alternately arranged in the pixel region and produces an in-plane electric field; and removing the photoresist pattern.Type: GrantFiled: August 1, 2012Date of Patent: February 11, 2014Assignee: LG Display Co., Ltd.Inventors: Ju-Ran Lee, Jeong-Yun Lee, Hang-Sup Cho, Doo-Hee Jang
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Patent number: 8488084Abstract: A flat panel display device includes a thin film pattern formed by an imprinting mold pressing imprinting resin on a substrate, an outer thin film pattern formed on an outer region of the substrate, adjacent to the thin film pattern, wherein the outer thin film pattern is used as a demolding seed for demolding the substrate from the imprinting mold, and the outer thin film pattern configured to limit movement of the imprinting resin.Type: GrantFiled: May 2, 2011Date of Patent: July 16, 2013Assignee: LG Display Co., Ltd.Inventors: Ho-Su Kim, Tae-Joon Song, Dhang Kwon, Hang-Sup Cho, Seong-Pil Cho, Doo-Hee Jang
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Publication number: 20130109114Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming gate and data lines crossing each other on a substrate; forming a thin film transistor connected to the gate and data lines; forming a passivation layer on the substrate having the gate lines, data lines and the thin film transistor; forming a first conductive material layer on the passivation layer and connected to a drain electrode of the thin film transistor; oxidizing a surface of the first conductive material layer; forming a second conductive material layer on the oxidized first conductive material layer; forming a photoresist pattern on the second conductive material layer; etching the first and second conductive material layers using the photoresist pattern to form pixel and common electrodes which are alternately arranged in the pixel region and produces an in-plane electric field; and removing the photoresist pattern.Type: ApplicationFiled: August 1, 2012Publication date: May 2, 2013Inventors: Ju-Ran Lee, Jeong-Yun Lee, Hang-Sup Cho, Doo-Hee Jang
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Publication number: 20130043477Abstract: An array substrate for a liquid crystal display device comprises: gate and data lines crossing each other on a substrate to define a pixel region; a common line spaced apart from and parallel with the gate line; a thin film transistor in the pixel region and connected to the gate and data lines; a passivation layer on the thin film transistor; and pixel and common electrodes alternately arranged to produce an in-plane electric field, wherein each of the pixel and common electrodes has a double-layered structure of which the lower layer is formed of reflective conductive material and the upper layer is formed of transparent conductive material.Type: ApplicationFiled: August 16, 2012Publication date: February 21, 2013Inventors: Doo-Hee Jang, Young-Sup Jung, Jeong-Yun Lee, Ju-Ran Lee, Soo-Young Choi
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Publication number: 20130027625Abstract: A liquid crystal display device is discussed, which includes a substrate; gate and data lines crossing each other on the substrate to thereby define a pixel region; a thin film transistor connected to the gate and data lines; and a plurality of pixel electrodes and a plurality of first common electrodes alternating with each other in the pixel region and configured to induce an in-plane electric field, and each including a first layer and a second layer on the first layer, wherein the first layer is made of an opaque metal and has a first thickness, and the second layer is made of a transparent conductive material and has a second thickness.Type: ApplicationFiled: July 11, 2012Publication date: January 31, 2013Inventors: Jeong-Yun Lee, Young-Sup Jung, Hang-Sup Cho, Doo-Hee Jang
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Publication number: 20110298159Abstract: Disclosed is an imprinting apparatus and imprinting method using the same that prevent a process of forming a pattern on a substrate from being affected by flatness of a stage. The imprinting apparatus comprises a chamber unit in which a process of forming a pattern on a substrate is carried out; a stage for supporting the substrate on which a resin layer is formed; an installing member positioned above the stage and having a mold member attached to transform the resin layer so as to form the pattern on the substrate; and a first spraying unit for spraying fluid to separate the substrate supported by the stage from the stage, wherein the installing member moves the mold member in the direction getting near to the substrate separated from the stage so that the mold member and the resin layer are brought into contact with each other.Type: ApplicationFiled: May 13, 2011Publication date: December 8, 2011Inventors: Doo Hee JANG, Tae Joon Song, Dhang Kwon, Hang Sup Cho, Seong Pil Cho, Ho Su Kim, Jin Hee Jang
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Publication number: 20110273647Abstract: A flat panel display device includes a thin film pattern formed by an imprinting mold pressing imprinting resin on a substrate, an outer thin film pattern formed on an outer region of the substrate, adjacent to the thin film pattern, wherein the outer thin film pattern is used as a demolding seed for demolding the substrate from the imprinting mold, and the outer thin film pattern configured to limit movement of the imprinting resin.Type: ApplicationFiled: May 2, 2011Publication date: November 10, 2011Inventors: Ho-Su Kim, Tae-Joon Song, Dhang Kwon, Hang-Sup Cho, Seong-Pil Cho, Doo-Hee Jang
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Publication number: 20110274840Abstract: An apparatus and a method of fabricating a thin film pattern, capable of forming a demolding seed between an imprinting mold and a substrate in a demolding process of demolding an imprinting mold from a substrate, are disclosed. The method of fabricating a thin film pattern includes coating imprinting resin on the other region except an edge region of a substrate, forming a thin film pattern on the substrate by contacting an imprinting mold with the imprinting resin, and demolding the imprinting mold from the substrate.Type: ApplicationFiled: May 2, 2011Publication date: November 10, 2011Inventors: Dhang Kwon, Tae-Joon Song, Hang-Sup Cho, Seong-Pil Cho, Ho-Su Kim, Doo-Hee Jang
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Publication number: 20110266709Abstract: Disclosed are an apparatus and method for fabricating a flat panel display device to realize easy separation of a substrate from an imprinting mold. The apparatus includes an imprinting mold connected to a substrate to form a thin film pattern on the substrate, a first adsorption pad to vacuum-adsorb the center of the imprinting mold, a second adsorption pad to vacuum-adsorb the periphery of the imprinting mold, and a connector connected to vacuum pins to vertically move in different regions of the first and second adsorption pads.Type: ApplicationFiled: April 15, 2011Publication date: November 3, 2011Inventors: Tae-Joon SONG, Dhang KWON, Hang-Sup CHO, Seong-Pil CHO, Ho Su KIM, Doo-Hee JANG
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Publication number: 20110140303Abstract: A method of fabricating an imprint mold is disclosed. The method includes: forming a first photo resist pattern on a substrate; etching the substrate using the first photo resist pattern as an etch mask to form a first pattern in the substrate; ashing the first photo resist pattern to form a second photo resist pattern; and etching the substrate using the second photo resist pattern to form a second pattern derived from the substrate and a third pattern derived from the first pattern.Type: ApplicationFiled: December 7, 2010Publication date: June 16, 2011Inventors: Doo Hee Jang, Dhang Kwon, Hang Sup Cho, Ho Su Kim